Kolwezite (original) (raw)
A valid IMA mineral species
About KolweziteHide
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Colour:
Black, brown, beige, pale beige, greenish
This page provides mineralogical data about Kolwezite.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:2243:5
ba8b03d0-9f0f-4364-be5e-c9cd50046646
IMA Classification of KolweziteHide
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Type description reference:
Classification of KolweziteHide
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5.BA.10
5 : CARBONATES (NITRATES)
B : Carbonates with additional anions, without H2O
A : With Cu, Co, Ni, Zn, Mg, Mn
16a.3.1.7
16a : ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
3 : (AB)2(XO3)Zq
11.14.2
11 : Carbonates
14 : Carbonates of Co and Ni
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Kwz | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Pronunciation of KolweziteHide
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Pronunciation:
| Play | Recorded by | Country |
|---|---|---|
| Sorry, your browser doesn't support HTML5 audio. | Jolyon Ralph | United Kingdom |
Physical Properties of KolweziteHide
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Colour:
Black, brown, beige, pale beige, greenish
Density:
3.97(1) g/cm3 (Measured) 3.94 g/cm3 (Calculated)
Optical Data of KolweziteHide
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RI values:
_n_α = 1.688(2) _n_γ = 1.900
δ = 0.212
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Chemistry of KolweziteHide
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Mindat Formula:
CuCo(CO3)(OH)2
Crystallography of KolweziteHide
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Cell Parameters:
a = 9.50 Å, b = 12.15 Å, c = 3.189 Å
α = 93.32°, β = 90.74°, γ = 91.47°
Ratio:
a:b:c = 0.782 : 1 : 0.262
Unit Cell V:
367.31 ų (Calculated from Unit Cell)
Morphology:
spherical aggregates, to 1 cm, and microcrystalline crusts.
Comment:
Point Group: 1 or 1; Space Group: P1 or P1.
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.04 Å | (80) |
| 5.08 Å | (80) |
| 3.70 Å | (100) |
| 2.956 Å | (50) |
| 2.591 Å | (80) |
| 2.535 Å | (50) |
| 1.109 Å | (50) |
| 3.02 Å | (40) |
| 2.338 Å | (40) |
| 1.289 Å | (40) |
| 2.141 Å | (30) |
| 1.741 Å | (30) |
Geological EnvironmentHide
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Type Occurrence of KolweziteHide
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General Appearance of Type Material:
Nodules (1-10 mm) and microcrystalline crusts.
Place of Conservation of Type Material:
- Royal Museum of Central Africa, Tervuren, Belgium, RMG12975.
- National Museum of Natural History, Washington, D.C., USA, R17228.
Geological Setting of Type Material:
Oxidized zone of a Cu-Co deposit
Associated Minerals at Type Locality:
Reference:
Deliens, M., Piret, P. (1980) La kolwézite, un hydroxycarbonate de cuivre et de cobalt analogue à la glaukosphaerite et à la rosaite. Bulletin de Minéralogie: 103: 179-184.
Synonyms of KolweziteHide
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Other Language Names for KolweziteHide
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Relationship of Kolwezite to other SpeciesHide
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Other Members of this group:
Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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Other InformationHide
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IR Spectrum:
Very similar to that of rosasite and somewhat similar to that of glaukosphaerite.
Thermal Behaviour:
A small endothermic break at 110°, a large one at 425° (loss of CO2), and a small one at 560°C (conversion of Co2O3 to Co3O4).
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for KolweziteHide
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References for KolweziteHide
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Reference List:
Hazen, Robert M., Hystad, Grethe, Golden, Joshua J., Hummer, Daniel R., Liu, Chao, Downs, Robert T., Morrison, Shaunna M., Ralph, Jolyon, Grew, Edward S. (2017) Cobalt mineral ecology. American Mineralogist, 102 (1) 108-116 doi:10.2138/am-2017-5798
Perchiazzi, Natale, Dragone, Roberto, Demitri, Nicola, Vignola, Pietro, Biagioni, Cristian (2018) Incorporation of Co in the rosasite–malachite carbonate group of minerals: crystal structure studies of kolwezite and synthetic cobaltoan malachites. European Journal of Mineralogy, 30 (3) 609-620 doi:10.1127/ejm/2018/0030-2743
Localities for KolweziteHide
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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the 
symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
Locality ListHide
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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. 
- Good crystals or important locality for species. 
- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
| DR Congo | |
|---|---|
| Haut-Katanga ⓘ Kambove Territory | Paul De Bondt |
| Lualaba Mutshatsha Kamoto ⓘ Kamoto East Open cut | Herve Osana photo |
| ⓘ Kamoto Principal Mine | Gauthier et al. (1999) |
| ⓘ Mupine Mine | Gauthier et al. (1999) |
| Kolwezi ⓘ Kolwezi Mine | |
| ⓘ Musonoi Mine (TL) | Deliens et al. (1980) +2 other references |
| Sicomines copper-cobalt project ⓘ Mashamba West Mine |
Lhoest et al. (1991) |
| ⓘ Tenke-Fungurume area | Paul De Bondt collection |
| ⓘ Kansalawile Mine | Paul De Bondt collection |
| Germany | |
| North Rhine-Westphalia Düsseldorf Mettmann Wülfrath ⓘ Prangenhaus quarry | Schnorrer-Köhler (1991) |
| Greece | |
| Attica East Attica Lavreotiki Lavrion Mining District Agios Konstantinos (Kamariza) ⓘ Kamariza mines (Kamareza mines) | Schnorrer (1995) +1 other reference |
| Italy | |
| Liguria Genoa Genoa Borzoli ⓘ Mt. Ramazzo Mine | Anthony R Kampf |
| USA | |
| Colorado Hinsdale County ⓘ Tuckerville prospects | Williams (1982) |